Panasonic WU-144MF1U9E Service Manual - Page 23

1. Main Operating Functions Remote Control Functions 1-2. Automatic Control for Heating and Cooling Automatic Heating/Cooling Control (1) When operation starts, heating or cooling is selected according to the set temperature and the room temperature. Room temperature Set temperature + 2 Cooling Set temperature - 2 < Room temperature Set temperature + 2 Monitoring mode (*1) Room temperature < Set temperature - 2 Heating *1: If the difference between the room temperature and set temperature is small when operation starts, the cooling thermostat remains in standby status (OFF) until the temperature difference increases. When the temperature difference increases, either cooling operation or heating operation is selected. This standby status is known as "monitoring mode." (2) After operation starts in the selected operating mode, the set temperature is automatically shifted by + 4°F (cooling operation) or - 4°F (heating operation). Example: Temperature set on the remote controller is 68°F. Selected operating mode Shifted set temp. Remote controller display 1 Cooling 72°F 68°F 2 Heating 64°F 68°F (3) Operating mode changes (heating cooling, cooling heating) which occur during operation as a result of temperature changes are handled as shown below. Heating cooling: Room temperature Shifted set temperature (set temperature + 4°F + 1°F Cooling heating: Room temperature Shifted set temperature (set temperature - 4°F - 2°F Example: Temperature set on the remote controller is 68°F. Operating mode change Shifted set temp. 1 1 Heating Cooling 68 + 4 + 1 = 73°F or higher (*2) 2 Cooling Heating 68 - 4 - 2 = 62°F or lower *2: During heating operation when the body sensor is used, a temperature shift is applied to the intake temperature detected by the sensor, in consideration for the difference in temperature at the top and bottom of the room. (Refer to the "Room Temperature Control" item.) If this intake shift temperature is 7°F, then the heating cooling change 2 occurs when the temperature detected by the body sensor is 80°F or higher. (4) Cooling (heating) operation does not change if the room temperature changes from area C A (or A C) within 10 minutes after the compressor turns OFF. (Monitoring mode is excepted.) +6 deg A 3 Selected operating mode +5 deg Shifted set temp +4 deg +2 deg Remote controller display B 4 -2 deg Shifted set temp -4 deg Selected operating mode -6 deg C 5 Thermostat ON OFF ON OFF ON OFF ON OFF ON OFF ON Heating Cooling Heating 6 7 2 - 3